While taping an episode of The Ellen DeGeneres Show (airing Monday, Jan. 7), the 48-year-old actress spoke about how they've remained on good terms since announcing their separation in October 2010. "He's my best friend in the world," Cox said of Arquette, 41. "I love him."

"I appreciate David more now than I ever did. I mean. . . it's hard. I don't recommend divorce in general, but he is my best friend and we've both grown and changed, and I think we both appreciate each other more," the Cougar Town star continued. "I hope he does. I do."

Though Arquette is currently dating Entertainment Tonight's Christina McClarty, Cox remains single. The spouses filed for divorce in June 2010, with both parties asking for joint physical and legal custody of their daughter. Cox also asked the court to legally remove her husband's surname.

Arquette has also continued to work with Cox as an executive producer on Cougar Town, which moves from ABC to TBS on Jan. 8. The actor also guest starred as a hotel concierge in the third season finale.